The B/S system of J2EE architecture has been the preferred scheme for many companies' procedure in information integration. More and more users are focusing on the stability of the system performance when they do the evaluation of their information system. This article will analyze and summarize the operation risks and problems, by monitoring B/S system of J2EE architecture and obtaining performance operation data in real-time or timing. The author will provide the discussion about how to support and guarantee the stability of the system performance.